from django.db import models


class Areas(models.Model):
    """创建省市区模型（三级联动）"""
    name = models.CharField(max_length=20,verbose_name="名称")
    parent = models.ForeignKey('self', on_delete=models.SET_NULL, related_name='subs', null=True, verbose_name='外键')

    class Meta:
        db_table = 'tb_areas'
        verbose_name = '省市区'
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.name